John Hennessey is a Senior ETL Developer with a strong background in data warehousing and ETL systems. With extensive experience spanning various roles, including Senior PS Consultant and Teradata Consultant at notable companies such as Teradata and Charles Schwab, they specialize in efficient data integration across large environments. John holds a BA in Computer Science from Wayne State University and continues to work on complex database migration projects. Their core competencies include working with diverse databases and languages, including Python, Perl, and AWS services.
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